Relationship Between Li/Ce Concentration and the Luminescence Properties of Codoped Gd3(Ga, Al)5O12:Ce

Masao Yoshino, Karol Bartosiewicz, Takahiko Horiai, Kei Kamada, Akihiro Yamaji, Yasuhiro Shoji, Yuui Yokota, Shunsuke Kurosawa, Yuji Ohashi, Hiroki Sato, Satoshi Toyoda, Romana Kucerkova, Vitezslav Jary, Martin Nikl, Akira Yoshikawa

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4 Citations (Scopus)


Li+ codoping of Gd3(Ga, Al)5O12:Ce (GGAG:Ce) single crystals induces the acceleration of scintillation decay time. However, its effect on the scintillation properties of GGAG:Ce remains poorly understood. Herein, the relationship between Ce/Li concentration and scintillation properties is investigated. GGAG crystals with a range of Ce and Li concentrations are grown by the Czochralski method and the scintillation decay and light output of GGAG:Ce, Li are measured. The results show comparable or improved performance compared with conventional scintillators. In optical absorption and photoluminescence (PL) measurements, the conversion of the stable Ce3+ to Ce4+ is not observed in a clear manner in GGAG:Ce samples with variable Li concentration. Instead, some defect-related absorption seems to appear. Temperature dependence of PL decay for samples with variable Ce concentration is also evaluated. A shift of the luminescence quenching temperature is observed for GGAG samples with >0.2% Ce.

Original languageEnglish
Article number1900504
JournalPhysica Status Solidi (B): Basic Research
Issue number8
Publication statusPublished - 2020 Aug 1


  • Gd3(Ga, Al)5O12
  • Li codoping
  • concentration effects
  • scintillators
  • single crystals


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